Shuttle mechanism for sewing-machine.



No. 701,730. PatentedJune-3, I902.

c. T. WAR-BEN.

SHUTTLE MECHANISM FOR SEWING -MAGHINES.

(Application filed Dec. 11, 1900.)

(No Modal.)

arynx-.2:

C. I'. fi r iv. I

A TTOHNEYS UNITED STATES PATENT OFFICE.

CHARLES 'r. WARREN, or SAN ANTONIO, TEXAS, ASSIGNOR or ONE-HALF TOGUSTAVE A. MAURER, or SAN-ANTONIO, TEXAS.

SHUTTLE MECHANISM FOR'SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 701,780, dated June 3,1902.

Application filed December 11,190Q. Serial No. 39,548. (No model.)

provements in Sewing-Machines, of which the following is aspecification.

My invention is an improvement in sewing machines, and particularly inthe shuttle and carrier therefor, having for an object to prevent unduewear upon the shuttle by-holding the same clear of the raceway, so' itwill not be subject to wear from the friction thereof, and also toarrange the tension'on the'inner side of the shuttle or side next theraceway; and the invention consists in certain novel constructions andcombinations of parts, as will be hereinafter described and claimed.

In the drawings, Figure 1 is a top plan View of my invention as in use,parts being broken away. Fig. 2 is a detail perspective view of theshuttle and its carrier. Fig. 3 is a detail perspective View of theshuttle. Fig, 4 is a detail perspective view of the carrier. Fig. 5 is across-sectional view drawn transversely through the point of a horn onthe cradle which fits within the recess on the top of the shuttle, andFig. 6 is an elevation of the inner side of the shuttle and carrier.

The shuttle-race A may be formed with the needle-well A, which parts,together with the oscillating lever B, may be of the usual or desiredconstruction. provided with a shank O, which is connected with theoscillating lever B, asis usual in sewing-machines of the typeillustrated. Or-.

dinarily in this class of sewing-machines the shuttle is held in acradle with the carrier, so it is free to move centrifugally against theraceway A, and the tension devices arranged upon the upper side of theshuttle. Manifestly this construction in operation produces considerablefriction between the shuttle and the raceway and a resulting wear onboth parts, as well as rendering the machine harder to operate becauseof such friction. In such construction-the shuttle is closed at the topand the operator cannot see the condition of the bobbin without takingthe shuttle out of the cradle. By my invention I support the shuttle soit practically floats in the air, by

The shuttle-carrier O is holding it from movement against the raceway,the nose of the shuttle projecting properly to catch the loop from theneedle so the said loop can pass around the shuttle, while the shuttleis held from movement against the raceway. I also make my shuttle openat the top, so the bobbin canbe readily seen without displacing theshuttle, and the tension is arranged on the inner side of the shuttle orside next the raceway. Manifestly it wouldbe impossible to arrange thetension on the side next the raceway exceptin connection with means forpreventing the movement'of the shuttle against such raceway, as if theshuttle were forced centrifugally against the raceway the thread, if insuch location, would wipe the grease from the raceway.

In the special construction shown I make the shuttle D open at its topat D leading to the well for the bobbin E which latter is jointed at Eas shown. In the heel of the bobbin I provide the upright groove F,while in the upper side of the shuttle I provide at Gr a cavity orrecess slightly in rear of the nose H, as shown. The tension-spring I isarranged on the inside of the shuttle or side next to the raceway, theconstruction being that ordinarily calledself threading, and the springmay in construction be of the ordinary type; but its location, asspecified, is

an important feature of my invention, as it enables me to have theshuttle open at the top, so the tension of the bobbin can be readilyseen, and also permits the proper formation of the stitch, as desired.

The carrier 0 is formedto receive the shuttle, holdthe same frommovement centrifug'ally'against the raceway, permit the passage of thethread around the shuttle, expose the bobbin, and also prevent anyrolling of the shuttle in the operation of themachine. To this end Iprovide the carrier 0 with a cradle 0 which is formed atitsfront endwith a horn J, whichextends over the shuttle, near the nose thereof, andfits within the cavity G in such manner as to prevent the movementcentrifugally of the nose of the shuttle toward the raceway. The cradleis also provided at its rear end or end opposite the horn J with anupright rib K, which fits within the heelgroove F of the shuttle andsecures such end against movement centrifugally against the raceway andprevents any rolling of the shuttle as the same is carried back andforth by the oscillations of the lever. It will be noticed that theshuttle may be readily applied to or removed from the cradle and will beheld, when in the cradle, from any movement toward or against theraceway; will also be held so the nose of the shuttle will catch theloop formed by the needle and the operator can see the bobbin withoutremoving the shuttle from the carrier. It will also be noticed that thethread has a direct action from the bobbin, because the tension is onthe inside of the shuttle next the raceway.

It will be noticed that my shuttle is provided on its outer side with arearwardlyfacing set-0E at a near its tip; also, that the shuttle isopen on three sides, so the operator can see the condition of the threadon the bobbinwithouttakingonttheshuttle. Again, by my construction Iprovide the carrier with a horizontal portion at J and with a verticalportion at K for engaging the shuttle and holding the same, as desired.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination of the shuttle provided in its upper side near itsnose with a cavity or recess and in its rear end with an upright groove,and the carrier forming a cradle for the shuttle and provided at itsfront end with a horizontal arm entering the recess or cavity in thenose of the shuttle and having at its rear end an upright rib enteringthe upright groove of the shuttle, substantially as set forth.

2. The combination of the shuttle provided at its rear end with anupright groove and the carrier therefor provided with an upright ribentering said groove and also provided with means engaging the nose endof the shuttle and adapted to cooperate with the rib and groove at theheel of the shuttle to prevent movement centrifugallyof the shuttleagainst the raceway, and the raceway, substantially as described.

' 3. A shuttle-carrier, substantially as described, provided with a hornto lap upon and secure the nose end of the shuttle, and also providedwith a rib to enter a groove in the heel end of the shuttle whereby tosecure said shuttle and prevent its rolling and the shuttle formed forcooperation with said carrier, substantially as described.

4. A shuttle having on its outer side at its nose an ofiset providing aspace between the shuttle and raceway in rear of said oifset,and thetension-spring arranged in the space in rear of said offset andconnected with the shuttle, and a carrier for said shuttle constructedto hold the shuttle from outward movement, substantially as set forth.

5. The combination of the shuttle open at its top and outer side wherebyto expose the bobbin to View, and provided in its upper side near itsnose with a cavity or recess for the horn of the carrier, and providedin its rear end with an upright groove, and the carrier having the hornextending horizontally over the nose of the carrier and entering therecess therein and provided with an upright rib entering the groove inthe heel of the shuttle, the latter being unobstructed by the carrier atits side next the raceway and provided with the tension devices on suchside, substantially as described.

6. A shuttle provided at its rear end with an upright groove formed toreceive the rib of the carrier and also provided within the innerportion of the upper side of its nose with a recess to receive the pointof the horn of the carrier, combined with the carrier having an uprightlip fitting the rear groove of the shuttle and the horn engaged in therecess thereof, substantially as set forth.

CHARLES T. W'ARREN.

Witnesses:

O. M. BEARD, WM. PARK HOLLAND.

